mount * 2 + umount + lookup = GEOM panic

[Yar Tikhiy]

On Sun, Aug 20, 2006 at 12:24:05PM +0200, Pawel Jakub Dawidek wrote:
> On Sat, Aug 19, 2006 at 11:08:05AM +0400, Yar Tikhiy wrote:
> > On Fri, Aug 18, 2006 at 10:25:08PM +0200, Pawel Jakub Dawidek wrote:
> > > No, it's difficult to solve in a architectural clean way, but IMHO this
> > > bug should be fixed. I've a fix for this (which allows for multiple
> > > read-only mounts). It's hackish, but works.
> > > 
> > > Unfortunately phk@ didn't agree on committing it, so next time, please
> > > CC him:)
> > 
> > Just to satisfy my curiosity:  Do you have references to a discussion
> > of the problem?  When such a simple script triggers an architectural
> > issue, the latter is definitely worth taking a glance at. :-)
> 
> I'm not sure if this was discussed in public. Anyway, the patch is here:
> 
> 	http://people.freebsd.org/~pjd/patches/mro_mount.patch
> 
> (I hope it is up-to-date).

Works for me!  That is, I can no longer reproduce the panic with
it applied.  I'm afraid I'm too ignorant to dig the patch though.

-- 
Yar